SB2021020303 - Denial of service in Rockwell Automation MicroLogix 1400
Published: February 3, 2021
Security Bulletin ID
SB2021020303
CSH Severity
Medium
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-22659)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to a boundary error. A remote attacker can send a specially crafted Modbus packet, trigger memory corruption, retrieve or modify random values in the register and cause a denial of service condition on the target system.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.